The Silver Castle Zone boss is a vehicle that appears in Sonic Blast. It was a flying combat vehicle created by Dr. Robotnik. It was used by the doctor to combat Sonic and Knuckles.



The Silver Castle Zone boss is a combat vehicle consisting of an egg-shaped capsule. It also has two laser cannons on its sides with teardrop-shaped armor pieces on top of them. It also has a yellow flight engine on its back as well. Also, the capsule possesses a protective glass cover that covers the entire upper part of the capsule. Color-wise. this vehicle possesses a black underside and light gray cannons. It also has yellow and black hazard stripes that are painted close to the back of the cannons.

Powers and abilities

Robotnik's vehicle is capable of flight and can fire lasers from its cannons.


Sonic Blast

In Sonic Blast, Dr. Robotnik used this vehicle to attack Sonic and Knuckles when the heroes passed through Silver Castle Zone. In spite of Robotnik's efforts though, his vehicle got destroyed by the two heroes in the end.


The Silver Castle Zone boss is the fifth boss (and possibly final boss if the player has not collected all the Chaos Emeralds before fighting it) of Sonic Blast. The player fights it at the end of Silver Castle Zone Act 3.

Boss guide

When the player enters the final teleporter in Silver Castle Zone Act 3, a fade-in will occur. The playable character will then find themselves on top of a giant wheel in the battle arena. Here, there are two diagonally-aligned mirrors on each side of the arena. There is also a third mirror above the player.

When the boss fight begins, the camera will move up to Robotnik, who is sitting in his boss vehicle above the arena. Robotnik then activates one of his laser cannons, which he will fire straight downward. As Robotnik takes aim, the camera moves back down to the playable character's part of the arena. The laser will then come down on the player. Depending on which of the boss vehicle's laser cannons that was activated when the player was shown the boss vehicle, the laser will either come down in the left side of the arena and bounce off the mirror there so that it heads horizontally rightward across the arena, or come down in the right side of the arena and bounce off the mirror there so that it heads horizontally leftward across the arena. When the laser heads across the arena, the player is at risk of getting hit by it. However, the player can jump to avoid it. Sometimes though, Robotnik will activate a laser cannon, only to deactivate it and then start up the other in order to disorientate the player. Robotnik will continue attacking like this until he is defeated.

This boss needs to be hit thirteen times to be defeated. However, invisible barriers prevent the playable character from reaching Robotnik though jumping, which will bounce the player back towards the giant wheel they stand on. In order to hit Robotnik, the player must displace the third mirror above the playable character so it intercepts and reflects the laser back towards Robotnik, causing him to take damage. In order to move the third mirror around, the player must carefully move leftward or rightward on the giant wheel they stand on.

After being defeated, the Silver Castle Zone boss will blow up before disappearing in a flash of white, clearing the Act. If the player has not collect all five Chaos Emeralds by then, it will mark the end of the game, as the Silver Castle will sink into the ocean as a result of the destruction.


Name Artist(s) Length Music Track
N/A Kojiro Mikusa 1:25
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